@jbudd, @Colin
I am using this device
8-Channel RTD Data Acquisition 8-Layer Stackable for Raspberry Pi – Sequent Microsystems
then i connected PT 100 to RTD
61tAriSEv9L.SX522.jpg (522×294) (media-amazon.com)
and now what i have the flow which i am using as trial there are two types of flows and
I have to use i2c node and sequent microsystem node which i have place the link of github
rtd-rpi/node-red-contrib-sm-rtd at master · SequentMicrosystems/rtd-rpi · GitHub
now what i have got the example from the forum and from github they are as follows
1). This is Github Example which i edited as my needs
[{"id":"dedb85dc.b133d8","type":"tab","label":"Flow 2","disabled":false,"info":""},{"id":"1cbd1095.05225f","type":"ui_gauge","z":"dedb85dc.b133d8","name":"","group":"6d0e4a93.472f74","order":1,"width":6,"height":5,"gtype":"gage","title":"RTD 3","label":"°C","format":"{{value | number:0}}","min":0,"max":"300","colors":["#00b500","#e6e600","#ca3838"],"seg1":"","seg2":"","className":"","x":930,"y":480,"wires":[]},{"id":"63b12e71.9367c","type":"exec","z":"dedb85dc.b133d8","command":"rtd 2 read 3","addpay":false,"append":"","useSpawn":"false","timer":"","winHide":false,"oldrc":false,"name":"","x":570,"y":500,"wires":[["71453aabacce54fc"],[],[]]},{"id":"d75976cd.56d598","type":"inject","z":"dedb85dc.b133d8","name":"","repeat":"1","crontab":"","once":true,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":130,"y":240,"wires":[["705b3583.6e855c"]]},{"id":"705b3583.6e855c","type":"delay","z":"dedb85dc.b133d8","name":"","pauseType":"delay","timeout":"1","timeoutUnits":"seconds","rate":"1","nbRateUnits":"1","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":false,"allowrate":false,"outputs":1,"x":200,"y":500,"wires":[["63b12e71.9367c"]]},{"id":"71453aabacce54fc","type":"function","z":"dedb85dc.b133d8","name":"","func":"var newMsg = msg.payload;\nnewMsg ={payload: msg.payload};\nif (parseFloat(msg.payload) > 300 || parseFloat(msg.payload) < -60)\n{\n newMsg.payload = \"0.0\";\n}\nreturn newMsg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":747,"y":490.20001220703125,"wires":[["1cbd1095.05225f","75a349b67ce954de"]]},{"id":"75a349b67ce954de","type":"debug","z":"dedb85dc.b133d8","name":"debug 3","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":900,"y":560,"wires":[]},{"id":"6d0e4a93.472f74","type":"ui_group","name":"TEMPERATURE3","tab":"501903b1.f40adc","order":3,"disp":false,"width":"6","collapse":false},{"id":"501903b1.f40adc","type":"ui_tab","name":"RTD","icon":"dashboard","order":3,"disabled":false,"hidden":false}]
2). this is the example
[{"id":"40b1d6b4f29aaaf7","type":"tab","label":"Flow 1","disabled":false,"info":"","env":[]},{"id":"fbd74ccd506b91b3","type":"rtd","z":"40b1d6b4f29aaaf7","name":"Sensor 1","stack":"2","channel":"3","resistance":false,"payload":"payload","payloadType":"msg","x":540,"y":220,"wires":[["1cf60b3e2f029bcf"]]},{"id":"b16d20f32b014fd7","type":"inject","z":"40b1d6b4f29aaaf7","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":280,"y":520,"wires":[["322c1f0cf8874247"]]},{"id":"53e8e537c0748614","type":"inject","z":"40b1d6b4f29aaaf7","name":"","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"1","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"","payloadType":"date","x":210,"y":220,"wires":[["4a18a01eafe57521"]]},{"id":"322c1f0cf8874247","type":"i2c scan","z":"40b1d6b4f29aaaf7","name":"","busno":"1","x":460,"y":520,"wires":[[],["76664ce7c05cc423"]]},{"id":"76664ce7c05cc423","type":"debug","z":"40b1d6b4f29aaaf7","name":"debug 1","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":720,"y":520,"wires":[]},{"id":"1cf60b3e2f029bcf","type":"debug","z":"40b1d6b4f29aaaf7","name":"debug 2","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":780,"y":220,"wires":[]},{"id":"4a18a01eafe57521","type":"i2c in","z":"40b1d6b4f29aaaf7","name":"","busno":"1","address":"66","command":"","count":"1","x":390,"y":220,"wires":[["fbd74ccd506b91b3"]]}]
and this is the forum link
RTD 8 channel hat with Raspberry Pi 4 (Need help to read temperature from PT100) - General - Node-RED Forum (nodered.org)
